Writing-machine.



Patented. Jan. 11, 1 910.

' 5 SHEETS-SHEET 1. l

j E. B. HEss. WRITING MACHINE.

APPLICATION FILED NOV. 15, 1905.

lllllll E.V B. HBss. WRITING ISIAGHINE. APPLICATION EILED NOV'. 15, 1905.

' Pafted Jan. 11,1910.

5 SHEETS- SHEET 2.

W/TNESSES:

www

E. B. HBSS.

WRITING MACHINE. APPLIUATION FILED Nov.15, 1905.

figg 9 J2 Imilrlulummmlmn I E. B. HBSS.

WRITING MACHINE.

PPLIuATIoN FILED Nov. 15, 1905.

' Patented Jan. 11,1910.

. W/TNESSES.'

E. B. HESS.

WRITING MACHINE.

APPLIGATIN FILED Nov. 15, 1905.

Patented Jan. 11,1910.

, 5 SHEETS-SHEET 5.

' BY//MA W/TNESSES:

-tiiairiaD :STATES PATENT oFFIcE.

EDWARD IB. HESS, F NEW YORK, N. Y., ASSIGNOR TO ROYA'L' TYPEWRITER COMPANY,

OF HOBOKEN, NEN.'I'EIRISEIY, A CORPORATION `OF NEW. JERSEY.

.WRITING-MACHINE.

, Specicati'on of Letters Patent. Patented an. 11,1910.

Application aieanovember 15,-1905. serial No. 28a-isa.

To -zZZ whom 'it may concern:

Be it known that I, EDWARD, B. HEss, a citizen of the United States,'residing in the borough of Brooklyn, city of New York, State ofNeW York, have invented certain new and useful Improvenientsin Writing- Machines, of which the following is/a speciiication.

This invention comprises ribbon mechan ism, particularly applicable to front stroke lor .visible writing machin-es, and consistsy in various'novel features of consruction and arrangement hereinafter set forth in detail. I

The .drawings show one embodiment of the invention in a forni constructed by me and which experience. has demonstrated to be practical and' efiicient.

Figure l'is Aa horizontal section, parts bcing omitted, showing the manner of mounting anddriving the ribbon bobb1ns; Fig.

2 a transverse sectioiishowing the same' andother parts; and Fig. 3 a `detail plan.

showing the ribbon, its side guide-rollers and the vibrator; Fig. 4,- a detail peispective view showing one of the ribbon di'iv ing gears and its shaft having a special bearing or seat for the-ribbon bobbin; Fig. 5,'

a transverse section through the shaft showing a device for retaining` the bobbin on the shaft; Fig. 6, a detail perspective view showing another form of seat for 'the rib-- bon bobbin, and Fig. 7, a similar view showi ing theribbon bobbin hub in place upon its seat, the flangesof the bobbin being omitted; Fig. 8, a view similar` to Fig. 7

showing a different form olf bobbin seat with the hub Aof a bobbin mounted' thereon and having a latch for locking it; F ig. 9,

a longitudinal vertical section on the line,

9, 9, of Fig. 1 showing, however, Athe ribbon vibrator, carriage and associated parts; Fig. 10, a similar View illustrating some modifications in construction; Fig'.v 11, a vertical longitudinal sectional view indicating an organization adapted for a polychrome ribbon and capable'of three ad. .,Jiistineiits, one for each color and one for stencil work; Fig. 12, a'detail front ele-va-l tion in rear of the line 12, 12, in Fig. lli;

Fig. 13, adetail side'elevation from thev left hand side of Fig. 12; Fig-14, shows the variable .leverage 'ribbon vibrating devices in a position different from .that shownin i. Fig. l11', and Fig. 15 shows them inthe position for stencil work.

-A Moiintedbetween theside plates `ofthe machine is a ,cross plate or frame a (Figs.

1, 2, 9) thatelias a bearing atti" for a shaft a having a pinion z3 meshing with aV gear lv formed on tlie springidrum. Thegear a is Y connectedwith itsshaftthrough a ratchet and pawl, or otherclutch device oappro ,p riate construction, c", so that as tliecarringe moves, injthe operation of'printing,

and .the spring drum makes successive increlve0 ments ,of revolution, the shaft a2 is driven in. l

a direction to feed the ribbon; but when' lturned in reversed direction as when the operatorl winds the ribbon lfrom one spool to the other, theshaft revolves independently of pinion a3. On `the front end ofthe comscribed, directly to the sp ring; drum, 1s i1 bevel pinion a meshing with 4a bevel gear 71,'

.or shifted endwiselto operatively connect either bobbin with thefribbon feedingdevices. The cross plate a is located considsomewhat adjacent the base thereofyand,

upon it, suit-ably adjacent the sideplates'ofv 'the machine, are bearings or housings 60 paratively short shaft a2,fjgeare d, as. de

-sol

the casing. by-

erably below the top of the machine-and v for driven ,shafts c2, cguponv which, as Will be. presentlydescribed, the ribbon bobbinsl are directly mounted. The rear Vend of each such shaft carriesv a bevel gear c3 that meshes 'with a bevel pinion c4 fixed on.- the endwise-movable shaft b in such position.

that when the shaft is shifted `to the left, the bevel gears c3, c4 for driving the. left hand ribbon bobbin are thrown into operative engagement, and when shifted to :the .right ioo these. bevel gears pass out of engagement .A i and those toward the .right hand side of the machine, for driving the right hand ribbon bobbin,are brought intol operative engage-y are `all in the same horizontal plane.` The `'ribbon bobbinv shafts carrying 'the rdriving gears project forward frointhe'bearings (c, c) and are in Fig. 4 shown as ofangularv cross section, the cross section as illustratedY being hexagonal. The hub oflthe ribbon bobbin is correspondingly apertured so. thatv when slipped into place upon the shaft'it has an interlocking jconnection therewith that insures its rotation, To prevent accidental disengagement'of the bobbin from its shaft, I'may, as indicated in Figs. 4 and 5, e place-a ball spring-latch 05 transversely in the angular portion of the shaft which, while retaining the bobbin normally place, permits of lits ready disengagement and replacement. As shown lin Figs. 6 and 7, the forward end of the bobbin shaft may be formed with longitudinal'ribs e, and the huboT of the' ribbon bobbin be correspondingly formed to fit thereon: or, as shown in Fig. 8, the ribbon bobb'in hub o? may havea cylindrical bore and carry a latch cs operating through an aperture` in the hub to engage the recesses formed in the shaft.

C, C, representx the ribbon bobbins and c* the ribbon traveling, as hereinafter described, from one ,bobbin to theother. The -shaft b has fast upon it an eniarg'ement or sleeve b5 with an annular groove thereon in which are located the armsb projecting up from a vplate 67 pivoted upon thexcross plate a and having in its front end a roller coperating with. cam recesses o8 in the edge of an arm b pivoted on the plate a and drawn against the roller on the end of arm 67 by a spring bw. ln shifting the ribbon driving shaft b endwise to drive either bob- ,bin from the spring drum, the gears'ca, o' will not always be in position to permit of their proper meshing. nsuch case, the roller of the arm b'/ will rest upon the inclined wall of one of the cam recesses 4bg; and when the shaft has been rotated sufficiently to bring the bevel gear c4 into proper relation with the gear c3 on the bobbin shaft,

the spring pressure exerted by arm b3 will be sufficient to carry thel shaft endwise and bring the gears into completeo'perative engagement. In F ig. 2, the type-bar segment is indicated at D. It may be of anyappropriate construction. The disposition f the ribbon bobbins below the top plate and adjacent the side walls is such as to'leave clearings for the assemblage of type bars' and their supports and mechanism vfor operating them'. Such type bar operating devices may be of the character shown` in' various Letters Patent heretofore granted toi: me as well as in pending applications, as for instance, U. S.' Letters Patent No. 700,687.May20,1902.

n Fig. 2, the ribbon vibrator d of usual construction is shown as mountedupon a vertical support cl'bolted to the front face of the type bar segment D@ The axes of the'iribb'on bobbinsjare isposed longitudinally of the machine andthe ribbon extends from the outer side of each bobbin vver- 4eter due to the ribbon wound thereon. This is'for the purpose of reducing tofa min-1- mum the maximum angularity of the ribbon las it passes to or from the-bobbin over the outer surface of the idler roll.

The guide rolls e have their axes inclined to the axis of theplaten, the point of conjunction of lines passing through the axes o f these rolls being in the center of the machine ata point in front of the platen. Experience has demonstrated that 'with this arrangement of bobbins and roller guides 9o the ribbon will run freely through the vi. brator slots without strain and with no distortion' and will readily assume the quarter turn.v position-between the vibrator.. slots and the respective idler rolls.l In the space above the shaft b and between the verticallsy1 disposed parts of the ribbon C* extending from the bobbins tothel idler guides, may be arranged the trough-like assemblage of forwardly extending type bars characteristic of a front stroke machine. This arrangement of type bars, however, being well understood.

it' has notbeenl deemed necessary to illustrate them or the platen against which they impingev in the operation of writing. Fig. 9 shows more of the organization of. a complete machine. The platen, type-bar segment y and vtype-bars are, however, omitted because unnecessary for the full illustrai tion ofthis invention. The carriage, of 110 which-f is the front rail, is shifted about the axis f by means ofthe key-.lever f2.v the construction in this regard being well understood. Any appropriate carriage shift mechanism` may be used. As shown the parts are in, normal position. The ribbon vibrator d vhas a downward extension d2 pinned at its lower end-to the elongated forwardly extending arm g of a bell-crank leverpivoted at g" at the bottom of vthe carriage, and having 'a short downwardly extending arm` g2 to the end of which at g3 is pivoted a link gwhich, when the parts 'are in the normal position shown,inclines for-- Wardly andfupwardly'to4 its point of con- 125 nectionv g5 with` the upwardly extending arm 7i. of a. bell-crank leverlocated centrally of the machine, pivoted on fan axis Ii beneath plate a, and having-a forwardly pro- -jecting arm k2. 'ifhe end of the latter arm 130 Maase v` t .a

. has pivoted to it the upper end yf a pendent link h3 whose lower end is\pivo ted to the front end of an arm It* extending from the universal bar U rearwardly to its rock-shaft U. I is the l.carriage rack-bar engaging pinion." z" on shaft of escapement wheel i. The usual escapement pawl z'zfpivo't'ed -at 3., extends below its pivot .and receives through an aperturea" threaded linkbolt 4 having. adyustable" nuts, one bearingT against each side of the end of the pawl.

This link-bolt is jointed' to a link 'if' pivoted.

to4 the bell crank-arm h belowthe pivotal-zl Thej connection therewith of theglink g4; connection g3 of link g? with the ribbon vi brator bell-crankis normally the same tance -belaw la horizontal line passing vthrough joint g5 .as it is above said line when;

the' carriage is shifted' and ythe ribbon. vi-

brator' bell-crank rises with ,itvlWhen a1 printingA key-lever4 F is Idepressed theunithe ribbon entirely out of action when the' versal bar U is carried vdown drawing 'down link k3 and throwing bell-crank arinr z`forjward. This operates thevescapementipawl and lifts the ribbon vibratorl to carry the ribbon in front of, the printing point. Thel same operationsoccur in the same way when the shift key is depressed (the.car1 'iag'ebe ingthenra'ised) and a printing 'key-lever isQpeI'ated. lOf course springs arey t0 be suitably applied where required to return,

or assist'in returning parts to normal posi# tion. In Fig. 9 F Fis the shift key-lever spring applied 'adjacent the-pivot thereof.

Fig. lOshows substant'iallythe same construction as Fig-9, therebeing only minor.

modifications, as followszgA coiled spring F2 extending fromcross plate .a z"-r ar a pliedf to the'shift key` lever: a large gear is car-- ried by'the'ribbon feed shaftagand a small gearor pinion by the spring drum; and the pa'wl runs direct to the upright arm Ilz, of

the beu crank.: 1 In this ngure the S11-ppm of the 'ribbon vibrator is not'inc licated.

Fig. l1- shows an organiz'ation'having the general scheme of arrangement :already defscribed with ladditional material-features. of

construction);consisting primarily in variable leverage devlces adapted to impart diil'erentA rangesofthrow.l orvibration to theribbon (which may now lbe polychrome-'and for` the special arrangeln Yent zones 'of the. ribbon, (ifunlike color, op-

posite the printing vpoilitfandalso to leave machine is beingused to prepare stencils for minieo'grap 1 work. In this construction the linklhif Figs. '9 and lO'is replacedby link j pivotedtoarm'h andV having at the -top "af cross 'p'inj" adapted t0 engage different. notches je, js in the arm h2 of bell-crank lever la' k2, at diilerent distances from the axis h thereof, or to; be thrown entirely entshown['bic hrome) to'.V brlng, 1nl elther position of' tlieplatenudiflerout of engagement with said arm' for stencil work. The means shown for accompllshlng theseoperations or adjustments are as fol.-

lows: On a rock-shaft k'below the arm L4 is attached an arm k thatstands in front of tends rearwardly above such bar and under the cross-piece "y" of link 7', and has project-'f ing lugs' or pins y1* between -'which the link j lies. Near theend of the rockf'shaft'lc and,

Las shown, at the left hand side of the ma.-

chine,' isl attached an upwardly extending'.

the universal barandat its upper-end exarmfcg to the end of 'which is attached.' a.v f

right lever la* at the' side .of the'keyboard.

.This lever i'sa'd-apted-to standvin three. pesi-4 tions towhich, it is'v readily .adiusted the- 'link lo? pivoted at its forward end toI an up opera-tor and which are determined. by en`7 4gagernent of'a pinonthe sidefof thej lever 'Y `With either one of" three' depressions' or' 'notches' 1mm m2, -in a plate'sprng fastened at it's'front end to the frame of the machine.v

When this lever isin `the position shown;` in

which the pin thereon engages 'notch'm the' A cross bar j" of linky', .liesin-notchj2 of bellcrank arm'Lz-which is nearestjthe axis of the bell-crank, and 'consequently when a print ing key-lever is depressed', in either position' of the platen, a maxununi throw is imparted to' arm h. of the. bell cralkfft, and the lower then linkj is drawn' forward and; lthe 'cross crank arm 713,- the: resi-llt :being that the 'leven l.age operating .uponazr'm 'H is increased. and '-a shorter. throw is unlpaited toarmqh suiiivv cient vto bringropposlte the, printing point the upper' -zone: of color' tif the'A ribbon; and

when notch mzoftheiplate sp1-ing. isengaged y lever' '7st link j is en'tlrely outaj of '.operative engagementwitlibelfl crank arm.l k2@ The:

. ribbon vibratorwilflncw remain at 'rest and.

the type maygfor stencilinv-work, bebronght.

to the printmgpolnt on the platen Without the ribbony intervening;

.The three condii tions described 4are shnwn, respectively, inA

Figs. 11,114and- 15.5 Aplazte spring. j* tends bell-crank 'thas-variable throw, duetto variable leverconnectins; 'or no movement at -v an,- Iit is ngt yprae'ti-abl to ese-'inwpemtethe carriagees'capement pawl. I therefore- `pivoted thegbell crank It, L2 ,"-a`se,cond bell;

crank n, n', andi-connect.-itsforwardly 'ex' tending arm n, .by a' linkntovthe arln'v It.

(that is to the universal bar.U). The-uppery end of'arm' n of this `bell crank is connected by bolt link if with therocking escapement plate 2.

In F ig. 9. I have indicated, in dotted lines.,l

to-retain'the'crossfpin j"1ntherespective. f-

the segment D, one of the center type-bars T pivoted therein and the platen vP for the purpose of giving a general idea of the-relation of these parts in the special embodiment of the invention illustrated.

I claim asiny invention l. In a visible writing machine, thecombination with a ysliii'ting carriage and ribbon vibrator, of a ribbon vibrating lever .rocking about a fixed axis, actuating devices adapted to be connected at different distances from the axisot1 said lever to thereby afford a variable leverage and consequent variation of movement to bring diiierent parallel 'Zones of the ribbon opposite the printing point and nieans located in front of the type bars for controlling, at will of the operator, the point of engagement` of such operating devices with the lever.

2. In a, visible writing machine, the combination with a shifting carriage-and ribbon vibrator, .of a ribbon vibrating lever ar-v ranged longitudinally'of the machine and rocking about a fixed axis, actuating devices adapted to be connected at diierent dis# tances froin'the axis of said lever to atford variation 'of movement. of the vibrator. to

bring different parallel zones of the ribbonopposite the printing point and comprising an arm swinging in a vertical pla-ne parallel with that in which said lever lies and havng means for engaging said lever, .and means located at the front of the machine for controlling, at will of the operator, the

point of engagement of suchoperatingdevices With the lever. v

3. Ina Visible writing machine, thevcombination with a shifting carriage, ribbon vibrator and. bell crank lever pivoted upon the carriage .'and l`connected with the ribbon vibrator, of a bellcrank turning about a `fixed. axis, `having an upwardly extending arm connected to the first named bell crank and a horizontally extending arm, actuating devices operating upon the latter arm and means whereby-such actuating devicesmay at will be applied to said'arin at different distances from its axis to therebyr afford a variable leverage and consequent variation of throw of the ribbon vibrator.

4. In a visible writing machine, the com- 'bination of a shifting carriage, a ribbon vibrator, a bell crank lever pivoted on the 1 Zontal line passing through the connection between the link and the arin of the second named bell crank when the carriage is in normal position as said point of connection 'is above such'horizontal line when the carriage is shifted upwardly,actuating devicesfor operating the second mentioned bel-l crank and means whereby they' may be applied to the laterally extending arm of said l bell' crank at ditl'erent distances Jfromgthel axis thereof, for the purpose described.

5. In a visible writing'machine, the com-V bination of a vertically sbit'ting carriage, va

4-latter armand link being,substantially, thc 4same distance belowa horizontal line passing through the connection between the link and the arm of the second named bell'crank when the `carriage Yis in normal position as lsaid point of 'connection is above such horizontal line when the carriage is shifted upwardlyg'actuating devices for operating the second mentioned bell crank and means under the control of the operator located in front vof the type bars whereby such actuating devices may be applied to the laterally extengding arm of said rbell crank at ditierent distances from its axis. A l

6. In a visible'writing machine, the combination with a shifti'ng carriage and rib-v bon vibrator of a bellcrank lever located in the longitudinal center of the mach-ine, p iv-. oted upon .the carriage and attachedfto the vibrator, of a second be'll crank lever also located in the center of the machine and having an upwardly extendingl arm connected bya link to the first named bell crank and a horizontally extendingv arm, and a connection between the latter -and the universal bar'.

7. In a visible writing machine the combi, nation with a shifting carriage and ribbon vibrator of a bell crank lever located. in the longitudinal center of the machine, pivoted upon the carriage and attached to the vibrator, of a second vbell crank lever also located y in the center of the machine and having an upwardly extending arm connected by a link to the first named bell crank and a horizontally extending arm, a connection between the latter and the universalba'r, a third bell crank rocking about the axis ofthe second mentioned bell crank, aconnection between it and the universal bar and a connection between it and the escapement. pawl of. the machine.

S. In a visible writing machine, the combination with a ribbon vibrator of a bell crank lever having a downwardly extending armiso eaas'aa mentioned bell crank and a connection between the laterally extending arm of the second mentioned bell crank and the universal bar. `Y 1 9. In a visible writing machine, the combination with al ribben vibrator of a bell crank lever having a downwardly extending arm and a laterally extending arm connected to the vibrator, a second `bell crank rocking about a fixed axis and having upwardly and laterally extending arms, a link connection' between such upwardly extending arm and thel downwardly 'extendingarm of the first. mentioned Abell crank,- a connection between the laterally extending'arm of theisecond mentioned bell -crank and the universal bar, and means for at the will of the operator,

varying the distance from the axis'ofsaid bell crank at which the connection from the.

universal bar is applied theret o.=vv 10. In a visible writing machine, the combination with 'a ribbon vibrator of a bellcrank lever having a downwardly extending arm and a` laterally' extendingv arm.l con`-` nected to the vibrator, a second bell crank rocking-about a fixed axis and having up wardljv15 and laterally extending arms, a li-iik connectionbetween such upwardly extending arm and the downwardly extending arm of the first mentioned bellcrank, a connection between the laterally extendin arm of the second mentioned bell crank an the universal bar, and means in the key board 'under control ofthe operator, wherebyat will the connection from the universal bar',

to the bell crank may beappli'ed at different distances from the axisl of the latter.

11. In a visible writin machine, the com-` bination with a verticaly shifting carriage and vertically movable ribbcn vibrator of a bell crank lever pivoted on the carriage and connectedl to the vibrator, a second bell crank lever i'ockinv about a fixed axis on the frame,

a horizontay disposed link connection be` tween one armY thereof and the first named A,bell crank and a link connection between the latter arm thereof andthe universal bar.

12. In af visible writing machine, ribbon vibrating mechanism' comprising the Vcombination of a bell cra-nk lever having seats orf recesses in one of its arms, a link-connectedV at its lower end to the universal bar and at its upper end having a projection adapted to l engage such recesses, and a pivotal adjusting arm connection with such link connection whereby on movement of Asaid arm the link connection may be en a ed with either one of the recesses in the e l crank arm.

13. In a. visible writing machine, ribbon 'vibrating mechanism comprising a bell crank vrocking about a l:tixed axis andliavin laterally extending arm, a4 link attache al: one end to nthe universal barand adapted at its other end to, engage the laterally extend' ing=bell crank arm, means under the control of the operator for engaging said link with said arm at different y distances from the axis' of the latter 4and for totally vdisen aging it therefrom,'wliereby on actuation o? the uni-V versal bar the bell crank may be actuated by dierent leverages to aiford variable move--7 nient thereof or.may remainat, rest, `for thev purpose described.

le. in a visible writing machine, lribbon vibrator mechanism comprising the combination of a bell cranklever, a link connec- -tion between one. arm thereof and vthe cuni# versal bar, an adjustinf arm controlling the distance at which said llink connection is a-p- 'rom such adjusting arm forwardly, and an adjustable lever in the keyboard to which the forward end of said link is connected.

15. Ribbon' feed'mechanism for typewritf' ling machines comprising` thejcombination with rotatable ribbon bobbinsmountedbe-- y lied to the bell crank arm, a link extending ff low' the top ofthe machine adj acent the side plates thereof upony horizontall axes ,transe verse' to the axis of. thel platen, roller guides located at' the top 'of the machine vertically above the ribbon bobbins and havingl their 'A axes slightly inclined tothe longit u dinaly thema'chin'e and a ribbon vibrator y center o l l located midway between the i'jol-lers, and in a transverse line slightly. in rear of a trans'- ve'rse line passing through ythe 'roller guides.

16.` In a ribbon feed-ing' mechanism for typewriting machines, the combination of 'a,

transverse driving shafty having a bevel pin-` ion thereon and a ribbon'bobbin shaft la'ced'f at yrightangles to the first rnentione shaft' gage said pinionand at'tlie-'other a nonios `and having a bearing intermediateits" ends and-at one end a`beve1 gear adapted to en# l circular seat or bearing adapted to receive a ribbon bobbin.

1 7.v In aribbon feed mechanism lfor type- 4 writing machines, a pair. ofribbonbobbin shafts located adjacent opposite sides of the Ivry machine, bearings in which they are seated intermediate vtheir ends, a gear on each shaft on one-,side of the bearing'the opposite end of each shaftv being adapted to receive. a l t v1` movable shaft driven from the spring drum ribbon bobbin combined withjan endwis'e and carrying gears'respectivel'y adapted to beat will engaged with the respective gears on the ribbon bobbin shafts,

18. Inl a ,ribbon feed mechanism for typewriting machines, a shaft having a bearin intermediate its ends and having one en equipged with a driving gear andthe `other end'a apted to receive a ribbon bobbin combined with a driven endwise movable shaft having a gear adapted by the endwise movement of the shaft to be thrown into and outl of engagement with the gearon the ribbon bobbin shaft.

lt). In a ribbon feed mechanism for typewriting machines, ribbon bobbins adapted to be alternately7 driven `mounted below the top of the machine and adjacent the side plates thereof, ribbon roller guides located above the ribbon bobbins adjacent the respective sides of the machine, the ribbon bobbins being so inolaited that the ribbon passes from the outer diameter of each roll to its roller guide and a ribbon vibrator located equidistant between the roller guides.

' 20. In a ribbon feed mechanism for typewriting machines, a pair of ribbon spools mounted for rotation upon horizontal shafts, a pair of ribbon roller guides mounted above said shafts and outside of vertical lines drawn through the shafts, the spool being mounted upon the shafts in such relation that the ribbonpasses `to and from their outside diameters over the guide rollers.

2l. Ribbon feed mechanism for a front strike typewriting machine, comprising the jacent the. printing poiit, ribbon guides' whose axes are disposed. obliquely to the axis of the platen located. on each side of the vibrator and in a transverse plane in front of that in which is located the vibrator, and ribbon bobbins having axes transverse to the platen of the machine located below the guides andv from which the ribbon passes Y upwardly over the guides to the vibrator.

23. Ribbon feed mechanism for a front strike typewriting machine, com )rising the brator, and ribbon bobbins adapted to be combination of a ribbon vibrator ocated adjacent the printing point, ribbon guides Whose axes are disposed .obliquely to the vaxis of the platen located on each side of the vibrator and in a transverse plane in front of that 1n which is located lthe v1- vibrator.

alternately driven located below the guides and from which 'the ribbon passes upwardly over the guides to the vibrator.

'24. Ribbon mechanism for a front strike typewriting machine, comprising the combination of a platen, a ribbon vibrator located adjacent the printing point, .ribbon guides located on each side of the vibrator ina transverse plane in front of that in which the vibrator is located and yribbon bobbins,

located below the plane of thejplatemfrom which respectively the ribbon passes over the corresponding guide to the vibrator.

strike typewritiiig machine, comprising the combinatioiiof a ribbon vibrator located adjacent the printing point, ribbon guides having curved faces whose axesare disposed obliquely to the vaxis of the platen located oneach side of the vibrator and in a transverse plane in front of that vin which is lo. cated the vibrator', and ribbon bobbins located below the guides and from which the ribbon passes upwardly over the guides to the vibrator.

2T. Ribbon vibrating mechanism for' a front strike typewriting machine, compris- `ing a. shifting platen, a ribbon. vibrator, means whereby the vibrator is automatically adjusted to ther platen when the latter is shifted, a. lever actingr to throw the vibrator to the printing point, a universal bar, a swinging link extending from the universal bar to said lever and-adjustable means under control of the operator for applyingthc link to said lever at different distances from the axis of the latter to tliereby,at will7 effect different extents of movement of the 'ln testimonyr whereof, I have hereunto subscribed my naine. l Y

EDWARD 132..i-iri`ss.'

Witnesses: i

L. F. BnowNING, 4 EDWARD C. Da vmsoj i ,L n 

